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Invalid indexing or function definition of curl function

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ali altaif
ali altaif 2022-11-15
评论： Rik 2022-11-15
The code used to work before but now is showing invalid indexing or function difinition
%<curl> <divergence> <gradient>
syms q w e r t y u i o p l k j h g f d s a z x c v b n m
fprintf('\n <curl> <divergence> <gradient>')
fprintf('\n *********************************')
fprintf('\n vector field -> 1 Scalor-> 0')
V=[x y z];
Q0= input("\n do you want to operate on a vector field or a Scalor : ");
if Q0==1
Vector1x = input ('\n input the X component of your vector : ');
Vector1y = input ('\n input the y component of your vector : ');
Vector1z = input ('\n input the z component of your vector : ');
v1=[Vector1x,Vector1y,Vector1z];
fprintf('Divergence -> 1 curl-> 0')
Q1=input("\n do you want to compute curl or divergence : ");
if Q1==1
V=[x y z];
Vd=[Vector1x,Vector1y,Vector1z];
div=divergence(Vd,V)
else
V=[x y z];
Vc=[Vector1x,Vector1y,Vector1z];
Curl=curl(Vc,V)
end
else
scaler = input( "\n write your scalor function\ : " );
fun=scaler
grad=gradient(fun,V)
end
Erorrs
Error using sym/subsindex
Invalid indexing or function definition. Indexing must follow
MATLAB indexing. Function arguments must be symbolic variables,
and function body must be sym expression.
Error in indexing (line 1079)
R_tilde = builtin('subsref',L_tilde,Idx);
Error in CDG (line 24)
Curl=curl(Vc,V)
  1 个评论
Rik
Rik 2022-11-15
Please format your code as code. That will allow you to run it within this forum. When you attempt to run it, you will notice that you have several manual inputs, which you did not describe. Please supply example inputs that you expect to work.

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